Feed-water heater and purifier



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no Model.) 3 Sheets- Sheet 1.

B. EPIELD & E. P. CLARK. FEED WATER HEATER AND PURIFIER.

N0.'502 ,035. Patented July 25,1893J (No Model.) I 3 S heets -Sheet 2.

B. F. FIELD & E. P. CLARK.

PBBDWATER HEATER AIfIDPURIFIERI' I f0. 502,035. Patented July 25,1893.

A '7 3SheetS-Sheet 3.

B. F. FIELD& E. P. CLARK. FEED WATER HEATER AND PURIPIER. Patented July -25, 1893.

(No Model.)

UNITED STATES PATENT OFFICE.

BENJAMIN F. FIELD AND ELI P. CLARK, OF LOS ANGELES, CALIFORNIA.

FEED-WATER HEAT ER AND PURIFIER.

SPECIFICATION forming art of Letters Patent No. 502,035, dated July 25, 1893.

Application filed November 23, 1892. Serial No. 452,895. (No model.)

To 11% whom it may concern.-

Be it known that we, BENJAMIN F. FIELD and ELI P. CLARK, citizens of the United States, residing at Los Angeles, in the'county of Los Angeles and State of California, have invented a new and useful Feed-Water Heater and Purifier, of which the following is a specification.

Our invention is especially adapted for that class of steam generators known as the Stirling boiler, which consists in aseries of boilers connected with a heater and mud drum by a series of substantially vertical tubes.

Our invention, however, is applicable to other water tube steam generators, such for instance as that known as the porcupine or Hazleton boiler in which a boiler is set erect in the furnace and the fire is applied to the outside of the boiler. We shall show and describe our invention as applied to the Stirling boiler only, as that will fully illustrate its principle and operation.

One object of our invention is to adapt the heater and purifier for application to the ordinary Stirling boiler after such boilerhas been put in place, utilizing the boiler tubes as a portion of the heater and purifier. Viewed in this light our invention comprises certain improvements for the Stirling boiler to form in connection therewith a purifier and heater which will purify and heat the Water before it is allowed to enter the steam chamber or boiler proper.

A further object is to provide for the effective and convenient removal of the deposits of sediment which occur in the process of purifying the water.

Our invention comprises an improvement for Stirling boilers consisting in a pipe system arranged within the mud drum and heater and communicating with the feed pipe; a series of tubular connections arranged to connect such pipe system with a series of the vertical tubes of the boiler, and a valve-controlled blow-off communicating with such coil.

- It also comprises the combination of a series of steam chambers or boilers; a heater or mud drum arranged below such boilers; systems of tubes communicating between the lower heater or mud drum and the boilers respectively; a feed-water pipe; a sediment receiving and water-heating coil or pipe-system arranged within the lower heater or mud system within the drum, (whereby the water is heated by the heat of the furnace before it enters the coil or system of pipes within the heater or mud drum) and also communicating at one end with the steam boiler and at the other end with the blow-0E. This last feature may be used or not according to the peculiarities of the circumstances, in some instances being desirable and in others less so. 1 The accompanying drawings illustrate our invention. a

- Figure 1 is a vertical section transverse the heating drum and steam boiler and the sediment coil or pipe system, and longitudinal the vertical discharge'tubes leading from such coil into the primary boiler. The removable extension of such vertical tubes is left intact. Fig. 2 is a vertical'sect-ion looking toward the lefton line x 50 Fig. 1 cutting longitudinal the primary steam boiler and breaking the heating drum and leaving the sediment coil or pipe system of such drum intact. Fig.3 is a section on line y-y Fig. 1 looking toward the right and illustrates the auxiliary coil or system arranged to be heated by the direct application of heat within the furnace to heat the water before it enters the pipe system within the lower heater or mud drum.

A is the furnace arranged substantially in the manner customary with the Stirling generator.

B, B and B indicate the several steam chambers or boilers proper which are respectively connected withthe lower heater or mud drum 0 by the tube systems D, D and D".

E is the feed water pipe.

F is the supply valve which controls the supply.

G is the blow 0% and H is the valve which controls the same.

I is the sediment coil or pipe system arranged within the heater or mud drum C and communicating with the feed water pipe E.

I is the discharge member of the sediment coil and 1' 't' are the tubular connections connecting such discharge member with the tubes d of the tube system D. The feed water pipe is connected with a sufficient number of the tubes (Z of the system which communicates between the heating drum 0 and the upper steam chamber or boiler proper, to cause the feed water ascending from the sediment coil to pass upward very slowly so that the solids contained therein may subside and deposit within the discharge limb I. The tubes Z thus connected with the sediment coil are arranged to receive the heat of the furnace more directly than other tubes 61 of the system; that is to say the tubes (1 are in front of the tubes 61 which are not connected with the sediment coil. This allows the water in the tubes 01 to become well heated before it:

enters the steam chamber or boiler B.

It is desirable that the blowotf pipes should have their mouths near the surface of the water in the boiler so that the surface impurities will be removed thereby and we therefore provide a series of removable tubular extensionsewhich arerespectivelyprovidedwith we claim asnew, and desire to secure by Let a flange 6' arranged around the lower end of such tubular extensions which extensions are of such size, respectively, as to fit snuglywithin their respective pipes d, and are of such length In the drawings the sediment coilis shown connected with eightof the tubes of the front row of the tube system D leaving nine tubes d of such front row to operate in conjunction with the other tubes of the system D to carry on the circulation from the primary boiler B to the heating or mud drum 0, from whence it passes to the other boilers B and B through the tube systems D and D" as in the ordinary Stirling boiler.

K indicates the Water pipe connecting the boilers B and B" below the water line and L L indicate the steam connections between the boilers B and B, and B and B".

We will now describe the operation of our invention (including the auxiliary coil) beginning when the boilers have been filled with water,the furnace fired, and the steam raised.

The feed water passes through the auxiliary heating coil J thereby becoming heated, and, passing thence into the sediment and heating coil 1, it becomes heated to a temfor a deposit of any consequence to occur withinthe limb I, the blow off valve H is opened; the pressure of the steam in the boilers then forces the water back through. the pipes d,tubular connections z',discharge limb I and sediment coil I and out through the blow off" G. When the deposit hasthus been removed, the blow ofi valve is closed and the operation is repeated as before.

N is a supplemental boiler blow ofi pipe ar- :ranged to communicate between the boiler B" and the auxiliary heating coilJ so that when the blow oif is operated the coil J may also be cleansed. A valve 0 is arranged to close the pipe N. Thisvalve O is kept closed except when blowing off the mud.

Now, having described our'invention,wl1at tersPatent, is

1. The improvement in Stirling'boilersset forth consisting in the combination of a pipe system arranged within the mud drum and heater of the boiler and communicating with the feed pipe; a series of tubular connections arranged to connect such pipe system with a series of the vertical tubes of the boiler, and avalve-controlled blow off communicating with such coil.

2. The combination set forth of a steam boiler; a drum arranged below such boiler; a system of tubes communicating between the drum and the boiler; a feed water pipe; a sediment receiving coil or pipe system arranged within the lower drum and communieating with the feed water pipe; a series of tubes leading from such coil and passing upward through the heating furnace and opening into the boiler; the furnace arranged to heat the boiler, the drum, the coil and the tubes, and a valve-controlled blow off communicating with the coil.

3. The combination set forth of the boiler; the feed pipe; the coil communicating with the feed pipe; the vertical tubes communicating between the coil and the boiler; the valve-controlled blow off communicating with the coil and the valve-controlled supplemental blow off pipe arranged to communicate between the boiler and the coil, and the furnace arranged to heat the boiler and the coil. 4:. The combination set forth of the steam boiler; adrum arranged below such boiler; a'

system of tubes communicating between the drum and the boiler; a feed water pipe; a sediment receiving coil or pipe system arranged within the lower drum and communieating with the feed water pipe; a series of tubes leading from such coil and passingvupward through the heating furnace and opening into the boiler; the auxiliary heating coil arranged in the furnace and communicating with the sediment coil within the heating drum; a supplemental valve-controlled blowoff pipe arranged to communicate between the boiler and the auxiliary heating coil; the furnace arranged to heat the boiler, the coil, the drum and the tubes, and a'valve-controlled blow-ofif communicating with the coils. 2 o

BENJAMIN F. FIELD. ELI P. CLARK.

Witnesses:

JAMES R. TOWNSEND, A. I. SMITH, M. E. HAMMOND. 

